"When we started shooting that episode, I thought to myself, If everything goes well, this is going to be a very, very convenient coincidence," Fischer told the site. "And I think I found out I was pregnant when we were shooting that episode."

Fischer's co-star Angela Kinsey, who plays uptight accountant Angela Martin, hid her real-life pregnancy on the show back in Season 4, but it looks like Fischer won't have to do that. She's a few months farther along than Pam, though, so at some point she may have to bring back her pregnancy padding from Season 6.

Production starts up again on Season 8 next week, and we may finally get the answer to the lingering question of who will step into Michael Scott's shoes as the new boss. Fischer knows, but she couldn't spill the beans. We do know one thing for sure, it won't be James Spader. As we reported last week, he will have already worked his way up to CEO in the season premiere.

The Office returns to NBC on Thursday, Sept. 22, in its usual 9:00 p.m. timeslot.